| South San Francisco to Nuth | 5,562.94 mi (8,952.69 km) |
| South San Francisco to Oegstgeest | 5,456.72 mi (8,781.74 km) |
| South San Francisco to Oirschot | 5,515.76 mi (8,876.76 km) |
| South San Francisco to Oisterwijk | 5,508.59 mi (8,865.21 km) |
| South San Francisco to Oldebroek | 5,481.20 mi (8,821.14 km) |
| South San Francisco to Oldenzaal | 5,515.70 mi (8,876.67 km) |
| South San Francisco to Ommen | 5,491.31 mi (8,837.41 km) |
| South San Francisco to Oosterend | 5,455.95 mi (8,780.51 km) |
| South San Francisco to Oosterhout | 5,496.00 mi (8,844.96 km) |
| South San Francisco to Oosterwolde | 5,462.56 mi (8,791.14 km) |
| South San Francisco to Oostzaan | 5,454.82 mi (8,778.69 km) |
| South San Francisco to Opmeer | 5,442.48 mi (8,758.83 km) |
| South San Francisco to Oss | 5,507.44 mi (8,863.36 km) |
| South San Francisco to Oud-Beijerland | 5,474.24 mi (8,809.94 km) |
| South San Francisco to Oudenbosch | 5,489.68 mi (8,834.79 km) |
